A numerical survey of nonlinear dynamical responses of discrete pantographic beams

Abstract Materials and structures based on pantographic cells exhibit interesting mechanical peculiarities. They have been studied prevalently in the static case, both linear nonlinear regime. When dynamical behavior is considered, available literature scarce probably for intrinsic difficulties solution of this kind problems. The aim work to contribute filling gap by addressing response beams. Starting from a simple spring model beams, equilibrium problem formulated directly such discrete system also considering inertia forces. Successively, equations sought means stepwise strategy non-standard integration scheme. Here, only harmonic excitations are considered and, large displacements, frequency-response curves thoroughly discussed some significant cases.